Jointing device.



No. 7I3,5Il. Patented. Nov. Il, |902..

E. H. SHELDON.

JDINTI'NG DEVICE. (Apphctxon 'led Jan 14, 1901 (No `Model.)

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Ulvrrnn Srn'rns PATENT OFFICE.

EDGAR H. SIIELDCN, OF CHICAGO, ILLINOIS.

JOlNTlNG DEVICE.

SEECIFICATION forming part of Letters Patent No. 713,511, dated November11, 1902.

Application filed January 14, 1901. Serial No. 43,228. (No model.)

T0 all whom it may concern.-

Be it known that I, EDGAR H. SHELDON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Jointing Devices, (CaseNo. 1,) of which the following is a full, clear, concise, and exactdescription, reference being had to the accompanying drawings,forming apart of this specification.

My invention contemplates the provision of a device for makingangle-joints, such as bevel and miter joints. The invention alsocontemplates the preparation of pieces or parts for such joints whetherthe joints be completed in the device or not. In this application I haveshown a form of device for accomplishing these results which I havefound very satisfactory in operation.

In the accompanying drawings, Figure 1 is a side elevation of such adevice embodying my invention. Fig. 2 is a plan view of the same. Fig. 3is a section taken on line 3 3 in Fig. 1.

rlhe device which I have illustrated in the drawings for carrying out myinvention contains a pair of clamping members A A, each of which isintended to receive one of the pieces which are to compose themiter-joint. To such end, as a convenient construction, each of theseclamping members is provided with a flat bed portion 1, upon which thepiece can rest, and a side wall or abutment 2, against which the side oredge of the piece can it. The two members AA are arranged in suchrelative position that the side walls 2 2 form a right angle to oneanother, each of these walls being conveniently at forty-five degreesfrom a central line extended between the two members. Each of theclamping members A A is provided with a suitable device for holding orengaging the piece of wood to be arranged upon the member iirmly inposition thereon. As'a simple arrangement I have shown each memberprovided with a pivoted lever 3,'having its inner end provided withnotches or teeth 4 4. This notched or toothed end of the lever iscamshaped, so that as the lever is swung about its pivot the distancebetween its notches or teeth and the wall 2 decreases. In this way whena strip or piece of wood is placed upon one of the clamping members withone of its side edges against the wall 2 the lever 3 can be swung so asto cause its teeth 4 4 to abut against and firmly grip the piece orstrip between itself and the wall 2.

As an arrangement for permitting the gripping of pieces of wood ofdifferent widths the clamping members A A are provided each with aseries of apertures 5 5, and the levers 3 3 are provided withrigidly-attached pivots, which are adapted to t in the apertures 5 5. Inthis way the levers 3 3 can be placed with their pivots in any one ofthe apertures 5 5, according to the width of the piece of wood. The sidewalls 2 2 of the clamping members A A are desir-ably provided withserrations or recesses 6 6 near their adjacent ends, through which nailsor screws can be inserted into the pieces while clamped. The twoclamping members A A are arranged for relative'movement toward and awayfrom one another, a convenient arrangement being to provide one of themembers with `rigidly-attached bolts 7 and 8 and the other member withsockets 9, 10, and 11, whereof the socket 9 is adapted to receive thebolt 7 and the sockets 10 and 11 to receive the bolt 8. The bolt S isdesirably made sufficiently long to extend through the socket 11, andits end is threaded and provided with a thumb-nut 12. By turning thethumb-nut 12 the two clamping members A A can be drawn toward oneanother, so as to firmly clamp the two pieces together. As this clampingof the two members together increases `the two pieces of wood areengaged more rmly by the levers 3 3.

The device is further desirably provided with an arrangement by which asaw can be employed to saw the ends of the pieces to be joinedcorrespondingly and can be held in proper and invariable position duringsuch time. The arrangement shown consists of a long arm 13, convenientlymade integral with one of the clamping members and projecting forwardlyfrom the same. This arm 13 carries a swinging arm 14, which has apivotal sliding connection with the end of the arm 13. The arm 14 isconstructed with a pair of depending brackets 15 15, each of which has aslot 16, adapted to receive and serve as a guide for a saw.

In the operation of the device the two pieces IOO to be joined togetherare placed upon the two clamping members, and each piece is gripped rmlybetween the wall 2 of its clamping member and the lever 3 thereof byproperly adjusting and swinging the levers 3 3. It will be observed thatin the arrangement shown these two levers 3 3 are so positioned thatthey are tightened by a movement of their outer ends toward each other.This facilitates the gripping of the two pieces of wood by permittingthe two levers 3 3 to be grasped by the same hand and crowded toward oneanother by a single movement of the hand. The pieces of wood beingfirmly gripped in the two members A A, the latter are clamped toward oneanother by adjusting the thumb-nut 12. If the mitered ends of the piecesdo not fit closely together, a saw can be employed, so as to saw one orboth of the ends of the pieces, and thereby bring about a perfect titbetween the same. It will be seen that since the saw is held in properposition relatively to the pieces to be mitered that the inclination ormiter of the two pieces must of necessity be exactly the same, as aresult of which aperfect joint can be made. The two pieces of wood beingthus fitted perfectly together', nails or screws are inserted into thetwo pieces, as desired.

The device can of course be constructed and used without the attachmentfor the saw; but I prefer to incorporate that attachment in the device,because it permits the mitered pieces to be properly cut for a perfectjoint should they happen to fit imperfectly.

The device can also be used to prepare pieces for jointing, although thejoint be not finished-that is to say, secured together in the device. Insuch case the device is simply used as a means for permitting theabutting ends of the strips or pieces to be jointed to be cut intoperfect correspondence for the desired joint.

The provision of the sliding connection between the swinging arm 14C andthe supporting-arm 13 is to permit the proper adjustment of the saw asoccasion may require.

While I have described my invention applied for making miter-joints, itwill be understood that devices can be constructed in accordance with itin such a man ner as to provide for the making of bevel or othersimilar' joints.

By the invention it will be seen that Iprovide for both the preparationof the pieces for making a miter-joint and the quick and easyconstruction of thatjoint in a perfect manner.

The device herein shown is an eiective embodiment of my invention; butinasmuch as its various parts and mechanisms can be replaced by otherswithout departing from the spirit of my invention Ido not wish to beunderstood as limiting myself to the exact construction shown.

What I claim as my invention isl. The combination ofacouple of clampingmembers each adapted to receive one of the pieces to be joined, bars orrods extended through-said members, one of the same being rigidlysecured to one member and having a screw-threaded portion extendedthrough the other, and a nut for the exposed end of said rod or bar,substantially as described.

2. A device of the class specified, comprising a pair of clampingmembers having side abutm ents, means whereby said members can be movedbodily toward and away from one another, and clamping devices arrangedupon said clamping members, one on each, and adapted to act upon theinner edges of the pieces or strips to be clamped, substantially asdescribed.

3. In adevice of the class specified, the combination of a pair ofclamping members provided with side abutments, means whereby the memberscan be moved bodily toward and away from one another, and levers pivotedupon said members on the inner sides ofthe pieces to be clamped,substantially as described.

4f. In adevice of the class specified, the combination of a pair ofclamping members, having side abutments and also each having a series ofapertures extending toward and away Y from the said abutments, rods bywhich a relative bodily movement on the part of the said members towardand away from one another can be secured, and levers having corrugatedinner ends and mounted upon pivots adapted to fit into the apertures insaid members, substantially as described.

5. The combination of a pair of clamping members each provided with agripping-lever adapted to grip the material upon its clamping member,said levers being arranged to grip the material when swung toward eachother, substantially as described.

6. The combination with a couple of clamping members, each of which isprovided with means for holding or gripping a piece or strip to bejointed, to the piece or strip of the other device,the said membersbeing arranged to hold their strips in proper relative position forjointing, means for moving said clamping members toward one another, oneof said devices being provided with a projecting arm, and a swinging armhaving a pivotal connection adapted to permit the bodily lateralmovement of said arm with the said projecting arm, the said swinging armbeing constructed with projections having slots adapted to act asguideways for a saw, and being arranged to swing into and out ofposition above the said clamping members, substantially as set forth.

7. A'device of the class specified, comprisinga pair of clamping membersprovided with abutments arranged at an inclination to one another, andalso provided with notched levers for gripping and holding pieces orstrips between themselves and said abutments, the clamping members beingprovided with apertures and the levers being provided with fixed boltsadapted to fit into said apertures, means for shifting said clampingmembers IOO IIO

i i i i i relatively to one another without destroying the relativeangularity of their abutments, one of said clamping members beingprovided with a projecting arm, and a swinging arm having alaterally-slidable pivotal Connection with said projecting arm and beingconstructed with downwardly-extending portions provided With slotsadapted to serve as guide- Ways for a saw, the said swinging arm beingarranged to swing into and out of position over or above the clampingmembers, substantially as described.

8. The combination with the clamping members provided with means forgripping or holding the strips or pieces to be joined,

